US9680124B2ActiveUtilityPatentIndex 73
Organic electroluminescent device, illumination apparatus, and illumination system

Assignee: TOSHIBA KKPriority: Feb 4, 2013Filed: Jul 31, 2015Granted: Jun 13, 2017
Est. expiryFeb 4, 2033(~6.6 yrs left)· nominal 20-yr term from priority
Inventors:KATO DAIMOTSU KAKIZOE HAYATO SAWABE TOMOAKI SUGI KEIJI WADA ATSUSHI MIZUNO YUKITAMI ONO TOMIO ENOMOTO SHINTARO SUGIZAKI TOMOKO AMANO AKIO SHINJO YASUSHI
H10K 59/878H10K 59/80521H10K 59/80517H10K 50/822H05B 45/60H01L 51/5221H01L 2251/5361H05B 33/0896H01L 27/3202H01L 51/50H01L 51/5225H01L 51/0096H01L 51/5271H01L 51/524H01L 51/5215H10K 50/856H10K 50/816H10K 50/82H10K 50/841H10K 59/84H10K 50/00H10K 77/10Y02E10/549Y02B20/30
PatentIndex Score
Cited by
References
Claims
Abstract

An organic electroluminescent device includes first and second electrode and an organic light emitting layer. The first electrode has an upper face. The organic light emitting layer is provided on the first electrode. The second electrode is provided on the organic light emitting layer. The second electrode includes a plurality of conductive parts. The conductive parts extend in a first direction parallel to the upper face and are arranged in a second direction. The second direction is parallel to the upper face and intersects with the first direction. When a length of each of the conductive parts in the second direction is set to W1 (micrometer), and a pitch of each of the conductive parts is set to P1 (micrometer). The W1 and the P1 satisfy a relationship of W1≧−647(1−W1/P1)+511 and a relationship of W1≦−882(1−W1/P1)+847.
Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An organic electroluminescent device, comprising:
 a first electrode having an upper face, the first electrode being light transmissive; 
 an organic light emitting layer provided on the first electrode; 
 a second electrode provided on the organic light emitting layer, the second electrode including a plurality of conductive parts, the conductive parts extending in a first direction parallel to the upper face and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the second electrode being light reflective, and 
 when a length of each of the conductive parts in the second direction is set to W1 (micrometer), and 
 a pitch of each of the conductive parts is set to P1 (micrometer), 
 the W1 and the P1 satisfying a relationship of W1≧−647(1−W1/P1)+511 and a relationship of W1≦−882(1−W1/P1)+847, 
 (1−W1/P1) being not less than 0.55 and not more than 0.85, and 
 the W1 being not less than 75 μm and not more than 300 μm; and 
 an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing a part of the first electrode, 
 
 the organic light emitting layer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       2. The device according to  claim 1 , wherein
 the W1 and the P1 further satisfy a relationship of W1≧−647(1−W1/P1)+595. 
 
     
     
       3. The device according to  claim 1 , further comprising a wiring layer provided between the first electrode and the organic light emitting layer and including a plurality of wiring parts, the wiring parts extending in the first direction and being arranged in the second direction, the wiring layer being light reflective and
 when a length of the wiring parts in the second direction is set to Wh (micrometer), and 
 a pitch of a projected image of the conductive parts projected onto a plane parallel to the upper face and a projected image of the wiring parts projected onto the plane is set to Pp (micrometer), 
 the W1 and the Pp satisfying a relationship of W1≧−647(1−W1/Pp)+511, and 
 the Wh and the Pp satisfying a relationship of Wh≧−647(1−Wh/Pp)+511. 
 
     
     
       4. The device according to  claim 3 , wherein
 the wiring layer is electrically connected to the first electrode, and 
 an electric conductivity of the wiring layer is higher than an electric conductivity of the first electrode. 
 
     
     
       5. The device according to  claim 1 , wherein
 a space between each of the conductive parts in the second direction is wider than a space between each of the insulating parts in the second direction. 
 
     
     
       6. The device according to  claim 1 , wherein the insulating layer is light transmissive. 
     
     
       7. The device according to  claim 1 , wherein
 the organic light emitting layer includes:
 a first layer; 
 a second layer provided between the first layer and the first electrode; and 
 a third layer provided between the first layer and the second electrode. 
 
 
     
     
       8. The device according to  claim 1 , wherein
 the light emitting layer includes a plurality of light emitting parts; and 
 each of the light emitting parts is provided between each of the conductive parts and the first electrode. 
 
     
     
       9. The device according to  claim 1 , further comprising a first substrate, a second substrate, and a seal part,
 the first substrate being light transmissive, 
 the first electrode being provided on the first substrate, 
 the second substrate being provided on the second electrode, and 
 the seal part being annularly provided along peripheries of the first substrate and the second substrate, the seal part sealing the first electrode, the organic light emitting layer, and the second electrode. 
 
     
     
       10. An organic electroluminescent device, comprising:
 a first electrode having an upper face, the first electrode being light transmissive; 
 an organic light emitting layer provided on the first electrode; 
 a second electrode provided on the organic light emitting layer, the second electrode being light transmissive; 
 a first wiring layer provided between the first electrode and the organic light emitting layer and including a plurality of first wiring parts, the first wiring parts extending in a first direction parallel to the upper face and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the first wiring layer being light reflective, 
 when a length of each of the first wiring parts in the second direction is set to Wh1 (micrometer), and 
 a pitch of each of the first wiring parts is set to Ph1 (micrometer), 
 the Wh1 and the Ph1 satisfying a relationship of Wh1≧−647(1−Wh1/Ph1)+511 and satisfying a relationship of Wh1≦−882(1−Wh1/Ph1)+847, 
 (1−Wh1/Ph1) being not less than 055 and not more than 0.85, and 
 the Wh1 being not less than 75 μm and not more than 300 μm; and 
 an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing a part of the first electrode, 
 
 the organic light emitting ayer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       11. The device according to  claim 10 , further comprising a second wiring layer provided on the second electrode and including a plurality of second wiring parts extending in the first direction and being arranged in the second direction, the second wiring layer being light reflective, and
 when a length of each of the second wiring parts in the second direction is set to (micrometer), and 
 a pitch of a projected image of the first wiring parts projected onto a plane parallel to the upper face and a projected image of the second wiring parts projected onto plane is set to Pp (micrometer), 
 the Wh1 and the Pp satisfying a relationship of Wh1≧−647(1−Wh1/Pp)+511, and 
 the Wh2 and the Pp2 satisfying a relationship of Wh2≧−647(1−Wh2/Pp)+511. 
 
     
     
       12. An organic electroluminescent device, comprising:
 a first electrode having an upper face, the first electrode being light transmissive; 
 an organic light emitting layer provided on the first electrode; 
 a second electrode provided on the organic light emitting layer, the second electrode being light transmissive; 
 a wiring layer provided on the second electrode and including a plurality of wiring parts, the wiring parts extending in a first direction parallel to the upper face and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the wiring layer being light reflective, 
 when a length of each of the wiring parts in the second direction is set to Wh micrometer), and 
 a pitch of each of the wiring parts is set to Ph (micrometer), 
 the Wh and the Ph satisfying a relationship of Wh≧−647(1−Wh/Ph)+511 and satisfying a relationship of Wh≦−882(1−Wh/Ph)+847, 
 (1−Wh/Ph) being not less than 0.55 and not more than 0.85, and 
 the Wh being not less than 75 μm and not more than 300 μm; and 
 an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing apart of the first electrode, 
 
 the organic light emitting layer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       13. An illumination apparatus, comprising:
 an organic electroluminescent device including:
 a first electrode having an upper face, the first electrode being light transmissive, 
 an organic light emitting layer provided on the first electrode, 
 a second electrode provided on the organic light emitting layer and including a plurality of conductive parts, the conductive parts extending in a first direction and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the second electrode being light reflective; and 
 
 a power source being electrically connected to the first electrode and the second electrode and supplying a current to the organic light emitting layer via the first electrode and the second electrode, 
 when a length of each of the conductive parts in the second direction is set to W1 (micrometer), and 
 a pitch of each of the conductive parts is set to P1 (micrometer), 
 the W1 and the P1 satisfying a relationship of W1≧−647(1−W1/P1)+511 and a relationship of W1≦−882(1−W1/P1)+847, 
 (1−W1/P1) being not less than 0.55 and not more than 0.85, and 
 the W1 being not less than 75 μm and not more than 300 μm, wherein 
 the organic electroluminescent device further includes an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing a part of the first electrode, 
 
 the organic light emitting layer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       14. An illumination apparatus, comprising:
 an organic electroluminescent device including:
 a first electrode having an upper face, the first electrode being light transmissive, 
 an organic light emitting layer provided on the first electrode, 
 a second electrode provided on the organic light emitting layer, the second electrode being light transmissive, and 
 a first wiring layer provided between the first electrode and the organic light emitting layer and including a plurality of first wiring parts, the first wiring parts extending in a first direction and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the first wiring layer being light reflective; and 
 
 a power source electrically connected to the first electrode and the second electrode and supplying a current to the organic light emitting layer via the first electrode and the second electrode, 
 when a length of each of the first wiring parts in the second direction is set to Wh1 (micrometer), and 
 a pitch of each of the first wiring parts is set to Ph1 (micrometer), 
 the Wh1 and the Ph1 satisfying a relationship of Wh1≧−647(1−Wh1/Ph1)+511 and a relationship of Wh1≦−882(1−Wh1/Ph1)+847, 
 (1−Wh1/Ph1) being not less than 0.55 and not more than 0.85, and 
 the Wh1 being not less than 75 μm and not more than 300 μm, wherein 
 the organic electroluminescent device further includes an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing a part of the first electrode, 
 
 the organic light emitting layer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       15. An illumination apparatus, comprising:
 an organic electroluminescent device including:
 a first electrode having an upper face, the first electrode being light transmissive, 
 an organic light emitting layer provided on the first electrode, 
 a second electrode provided on the organic light emitting layer, the second electrode being light transmissive, and 
 a wiring layer provided on the second electrode and including a plurality of wiring parts, the wiring parts extending in a first direction and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the wiring layer being light reflective; and 
 
 a power source electrically connected to the first electrode and the second electrode and supplying a current to the organic light emitting layer via the first electrode and the second electrode, 
 when a length of each of the wiring parts in the second direction is set to Wh micrometer), and 
 a pitch of each of the wiring parts is set to Ph (micrometer), 
 the Wh and the Ph satisfying a relationship of Wh≧−647(1−Wh/Ph)+511 and a relationship of Wh≦−882(1−Wh/Ph)+847, 
 (1−Wh/Ph) being not less than 0.55 and not more than 0.85, and 
 the Wh being not less than 75 μm and not more than 300 μm, wherein 
 the organic electroluminescent device further includes an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of openings exposing, a part of the first electrode, 
 
 the organic light emitting, layer being, provided on the insulating, layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping, with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       16. An illumination system, comprising:
 a plurality of organic electroluminescent devices, each of the organic electroluminescent devices including:
 a first electrode having an upper face, the first electrode being light transmissive, 
 an organic light emitting layer provided on the first electrode, and 
 a second electrode provided on the organic light emitting layer and including a plurality of conductive parts, the conductive parts extending in a first direction parallel to the upper face and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the second electrode being light reflective; and 
 
 a controller electrically connected to each of the organic electroluminescent devices and controlling turning on and off of each of the organic electroluminescent devices, 
 when a length of each of the conductive parts in the second direction is set to W1 (micrometer), and 
 a pitch of each of the conductive parts is set to P1 (micrometer), 
 the W1 and the P1 satisfying a relationship of W1≧−647(1−W1/P1)+511 and a relationship of W1≦−882(1−W1/P1)+847, 
 (1−W1/P1) being not less than 0.55 and no more than 0.85, and 
 the W1 being not less than 75 μm and not more than 300 μm, wherein 
 each of the organic electroluminescent devices further includes an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating pans extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing a part of the first electrode, 
 
 the organic light emitting layer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       17. An illumination system, comprising:
 a plurality of organic electroluminescent devices, each of the organic electroluminescent devices including:
 a first electrode having an upper face, the first electrode being light transmissive, 
 an organic light emitting layer provided on the first electrode, 
 a second electrode provided on the organic light emitting layer, the second electrode being light transmissive, and 
 a first wiring layer provided between the first electrode and the organic light emitting layer and including a plurality of first wiring parts, the first wiring parts extending in a first direction parallel to the upper face and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the first wiring layer being light reflective; and 
 
 a controller electrically connected to each of the organic electroluminescent devices and controlling turning on and off of each of the organic electroluminescent devices, 
 when a length of each of the first wiring parts in the second direction is set to Wh1 (micrometer), and 
 a pitch of each of the first wiring parts is set to Ph1 (micrometer), 
 the Wh1 and the Ph1 satisfying a relationship of Wh1≦−647(1−Wh1/Ph1)+847, and a relationship of Wh1≦−882(1−Wh1/Ph1)+847, 
 (1−Wh1/Ph1) being not less than 0.55 and not more than 0.85, and 
 the Wh1 being not less than 75 μm and not more than 300 μm, wherein 
 each of the organic electroluminescent devices further includes an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction; and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing a part of the first electrode, 
 
 the organic light emitting layer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face. 
 
     
     
       18. An illumination system, comprising:
 a plurality of organic electroluminescent devices, each of the organic electroluminescent devices including:
 a first electrode having an upper face, the first electrode being light transmissive, 
 an organic light emitting layer provided on the first electrode, 
 a second electrode provided on the organic light emitting layer, the second electrode being light transmissive, and 
 a wiring layer provided on the second electrode and including a plurality of wiring parts, the wiring parts extending in a first direction parallel to the upper face and being arranged in a second direction, the second direction being parallel to the upper face and intersecting with the first direction, the wiring layer being light reflective; and 
 
 a controller electrically connected to each of the organic electroluminescent devices and controlling turning on and off of each of the organic electroluminescent devices, 
 when a length of each of the wiring parts in the second direction is set to Wh (micrometer), and 
 a pitch of each of the wiring parts is set to Ph (micrometer), 
 the Wh and the Ph satisfying a relationship of Wh≧−647(1−Wh/Ph)+511 and a relationship of Wh≦−882(1−Wh/Ph)+847, 
 (1−Wh/Ph) being not less than 0.55 and not more than 0.85, and 
 the Wh being not less than 75 μm and not more than 300 μm, wherein 
 each of the organic electroluminescent devices further includes an insulating layer provided on the first electrode, the insulating layer including
 a plurality of insulating parts extending in the first direction and being arranged in the second direction, and 
 a plurality of openings provided between each of the insulating parts, each of the openings exposing a part of the first electrode, 
 
 the organic light emitting layer being provided on the insulating layer, 
 the first electrode having a plurality of exposed parts exposed by the openings, and 
 each of the conductive parts overlapping with any of the exposed parts when projected onto a plane parallel to the upper face.
Cited by (0)

No later patents cite this yet.
References (0)

No backward citations on record.